Ready for a two-hour all-you-can-eat barbecue? With fatty cuts of pork belly, tender beef tongue, horumon (offal), and marbled slices of boutique beef such as Kuroge wagyu? Then head to Gyu-Kaku, a chain especially popular with students and often hidden on the upper floors of office towers. Whichever one you try, it will be a yakiniku (barbecued meat) joint, where diners cram side by side to prepare their own charcoal-grilled meat in a slightly raucous atmosphere and wash it down with highball after highball. (The deals are often all-you-can-drink, too.) They’re anything but luxurious, but many locations fill up on weekends and don’t usually take reservations, so go early or late to ensure you get a table.